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/*
* Copyright 2014 The Android Open Source Project
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkMatrixImageFilter_DEFINED
#define SkMatrixImageFilter_DEFINED
#include "SkImageFilter.h"
#include "SkScalar.h"
#include "SkSize.h"
#include "SkPoint.h"
#include "SkPaint.h"
/*! \class SkMatrixImageFilter
Matrix transformation image filter. This filter draws its source
input transformed by the given matrix.
*/
class SK_API SkMatrixImageFilter : public SkImageFilter {
public:
/** Construct a 2D transformation image filter.
* @param transform The matrix to apply when drawing the src bitmap
* @param filterLevel The quality of filtering to apply when scaling.
* @param input The input image filter. If NULL, the src bitmap
* passed to filterImage() is used instead.
*/
static SkMatrixImageFilter* Create(const SkMatrix& transform,
SkPaint::FilterLevel,
SkImageFilter* input = NULL);
virtual ~SkMatrixImageFilter();
virtual void computeFastBounds(const SkRect&, SkRect*) const SK_OVERRIDE;
SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkMatrixImageFilter)
protected:
SkMatrixImageFilter(const SkMatrix& transform,
SkPaint::FilterLevel,
SkImageFilter* input = NULL);
SkMatrixImageFilter(SkReadBuffer& buffer);
virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;
virtual bool onFilterImage(Proxy*, const SkBitmap& src, const Context&,
SkBitmap* result, SkIPoint* loc) const SK_OVERRIDE;
virtual bool onFilterBounds(const SkIRect& src, const SkMatrix&,
SkIRect* dst) const SK_OVERRIDE;
private:
SkMatrix fTransform;
SkPaint::FilterLevel fFilterLevel;
typedef SkImageFilter INHERITED;
};
#endif